"Running away from the tough spots; forcing away the situations that scare us and pretending they do not exist, is to deny such an important part of growth," she continued.

"There is no more powerful feeling than that of looking back and seeing how far you have come. I have come a long way from these photos, but I still have bad days :) I'm a human. And that's OK. So much love to you all!!!"

The Aussie model often posts pics from her travels. Picture: Instagram

The model also referred her followers to her personal blog, where she reveals more details of some of her harder days.

In one post entitled "Bad Day" the model wrote, "So today is a f***ing awful day. I am having a really really hard time. I woke up feeling OK, but it slowly went downhill. The tough thing is that nothing really happened."

Malcolm continued and said, "I looked in the mirror, and decided I was fat," adding that things shortly got worse to the point where she went for a walk and sought out help from her husband, Nathaniel Hoho.

The Australian is a global modelling star. Picture: Getty Images

"Then I began to feel better," Bridget said, pointing out that no one is exempt from feeling "awful" every now and then.

"We are always going to have ups and downs. Running away from the low points achieves nothing - the only way out is through. It is painful and hard. Every second when I am mentally down, I do the little things I can count on to make myself happy."